absolute zero
Preserved but no longer current.
Meaning · English
The temperature at which a theoretically perfect gas, kept at constant volume, would exert no pressure. In practice this is— 273.1° C.
Era: ca. 1898 (Victorian)
Sources & notes
Reproduced from Brewer’s Dictionary of Phrase and Fable (1898 edition, public domain; archive.org, retrieved 2026-07-31; OCR text, minor errors possible). Reflects the scholarship and attitudes of its era.
Common questions
What does “absolute zero” mean?
The temperature at which a theoretically perfect gas, kept at constant volume, would exert no pressure. In practice this is— 273.1° C.
Is “absolute zero” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.